“…Among those not showing an association with gender 12,16,19,23,31,32,40,43 , five 16,19,23,31,43 only performed univariate analysis and/or showed a low score according to Downs & Black criteria and Finn et al only studied individuals 65 years or older 40 . Two other studies that did not show an association with gender were case-controls; however, they compared populations with similar health problems that chose to go to the ED or to the outpatient department, while the others compared individuals with inappropriate versus appropriate ED use 12,32 .…”